5 home strength tests to check you’re keeping muscle on a GLP-1

By Aali Qureshi, founder of Deadly Company · Published October 24, 2026 · Updated October 31, 2026

Short answer: Five home checks: grip strength, the 30-second chair stand, a push-up variation, single-leg calf raises and a glute-bridge hold track whether function holds during GLP-1 weight loss. Test under the same conditions every few weeks and watch the trend, not single scores; multi-test decline warrants clinician follow-up. The 16g of EAAs with 4g of leucine in Muscle Water Aminos can cover one protein feeding when food volume is the obstacle.

Why “the mirror feels different” is not enough

During GLP-1 weight loss, the mirror changes quickly and strength changes quietly. Clothing loosens, the face changes, friends comment on size — long before anyone notices that a jar is harder to open, or that standing from a low chair takes an extra push. By the time weakness becomes obvious in daily life, the trend has usually been available for weeks.

Home tests solve the measurement problem without pretending to be medical instruments. They give you a baseline before the loss accelerates, and a repeatable set of numbers to place beside weight, waist, food intake, and — if you have them — DEXA appendicular lean-mass trends. The point isn’t to grade yourself against strangers. It’s to catch your own line bending the wrong way.

Before you test: make the conditions boring

Use a stable chair placed against a wall, supportive footwear or the same barefoot setup each time, and enough clear space to move safely. Warm up with a few minutes of easy movement. Stop for chest pain, severe breathlessness, dizziness, sharp joint pain, or a feeling that you might fall. If a clinician has given you activity restrictions, those instructions outrank this article.

Write down the date, test variation, equipment, and result immediately. Repeat the set every four to eight weeks, or at another interval your clinician suggests, rather than testing maximally every few days — fatigue and practice both distort results. Keep the record in this shape and the trend reads itself:

Test	Variation used	Baseline	Latest
Grip strength (per hand)	Dynamometer, seated, elbow ~90°
30-second chair stand	Chair height: ___
Push-ups	Wall / countertop / knee / floor
Single-leg calf raises (per side)	Fingertip support at counter
Glute-bridge hold	Feet position: ___

1. Grip strength

What it tells you: Grip is a practical marker of overall muscular function, widely used because it is quick and repeatable. It doesn’t measure the whole body, but a sustained decline is worth attention.

How to do it: Use the same hand dynamometer if you have one. Sit with your feet supported, upper arm by your side, elbow bent to about a right angle, wrist neutral. Squeeze as firmly as you safely can for a few seconds. Take three attempts per hand, resting between attempts, and record the best or the average — choose one method and keep it.

Watch for: A dynamometer is the measurement tool here; squeezing household objects or a bathroom scale is not an equivalent substitute. Keep the device setting and posture constant.

2. The 30-second chair stand

What it tells you: Repeatedly standing from a chair tests lower-body strength and endurance — the kind used on stairs, in cars, and getting up from floor level in daily life.

How to do it: Sit in a stable chair with your feet flat and arms crossed over your chest if you can do so safely. Stand fully and sit in a controlled way, as many times as you can in 30 seconds. Count only repetitions where you reach a full stand. Keep the same chair height every time; a lower chair is a harder test.

Watch for: Don’t pull yourself up with furniture unless that is the variation you have chosen for safety — and if it is, record it as assisted and use the same assistance next time. If balance is a concern, test beside a counter or with another person present.

3. Push-ups at your repeatable level

What it tells you: A push-up variation tests the chest, shoulders, arms, and trunk together. The best variation isn’t the most impressive one; it’s the hardest one you can repeat with consistent form.

How to do it: Choose wall, countertop, knee, or floor push-ups. Keep the body position and range of motion the same, and count technically consistent repetitions before form breaks down. Record the surface and variation in capital letters if necessary. A move from floor to wall isn’t automatically failure if pain or treatment changes required it — but it is a protocol change, so note it.

Watch for: Shoulder pain is information, not a challenge. Use a pain-free variation, and discuss persistent pain with a clinician or physical therapist.

4. Single-leg calf raises

What it tells you: Calf strength and ankle control show up in walking speed, stairs, balance, and the ability to recover from a trip.

How to do it: Stand beside a counter for fingertip balance support. Rise onto the ball of one foot through a comfortable full range, lower with control, and repeat until form or balance fails. Test both sides and record each separately. Use the same footwear, support, and tempo each time.

Watch for: A side-to-side difference is worth recording, especially after an ankle, knee, or foot injury. Don’t turn the test into an uncontrolled balance contest; the support is there to keep the measurement about strength.

5. Glute-bridge hold

What it tells you: The bridge tests hip-extension endurance — the posterior-chain function involved in standing, walking, climbing, and protecting the lower back during ordinary tasks.

How to do it: Lie on your back with knees bent and feet flat. Lift the hips until your body forms a comfortable straight line from shoulders to knees, squeeze the glute muscles, and hold without letting the pelvis drop or the lower back arch painfully. Time the hold and stop when position can no longer be maintained. Keep the same foot position and surface.

Watch for: Hamstring cramping or back pain can change the result. Note symptoms beside the time rather than forcing a longer hold.

How to interpret the trend

One lower score can mean poor sleep, nausea, a recent dose increase, soreness, illness, or an off day. Look for a pattern across two testing sessions and across more than one test. Also look at what changed around the numbers: body weight, protein intake, training consistency, symptoms, medicines. If you track body composition clinically, how to read a DEXA scan on a GLP-1 is the clinical counterpart to these kitchen-table checks.

If strength is stable while weight falls, that is useful reassurance — not proof that every gram of lean tissue is safe, but evidence that function is being defended. If several scores fall while intake is low, that is a cue to act sooner: review the daily protein target, make resistance sessions realistic enough to repeat, and bring the record to the clinical team.

The protein side follows the mechanism this Journal keeps coming back to — muscle protein synthesis in plain English covers it in full. Leucine is the ignition. The other EAAs are the bricks. A complete serving such as the 16g of EAAs in Muscle Water Aminos — the whole ~138g steak’s worth — with 4g of leucine, formulated to clear the leucine trigger with a 1.3g margin, can cover a feeding when food volume is the obstacle; how much leucine per meal works out how many of those feedings a day needs. Muscle Water Aminos is a protein supplement, not a meal replacement. Food first — this covers the protein on the days food isn’t happening.

Questions people actually ask

How often should I repeat the tests? Every four to eight weeks is a practical interval for many people, but follow clinician guidance if you have it. Testing too often adds fatigue and practice effects without adding much information.

What is a good score? This article deliberately doesn’t print universal cutoffs. Scores depend on age, sex, health, equipment, and exact protocol. Your own trend, interpreted with a clinician when it changes, is safer than a copied threshold.

Can these tests diagnose sarcopenia? No. Sarcopenia assessment can involve strength, muscle quantity, physical performance, symptoms, and clinical context. These home tests are monitoring tools, not a diagnosis.

What if I cannot do one of the tests? Use a safer variation, substitute a clinician-approved assessment, or leave that test out. Record why. A missing test with a reason is better data than an injury acquired completing a list.

Where this leaves you

You can’t feel a percentage of lean mass. You can count chair stands, time a bridge, and record a grip number. Baseline the five tests, repeat them under boringly consistent conditions, and treat a multi-test decline as an early conversation with your clinician — not a reason to wait until weakness becomes the presenting symptom. On a GLP-1, the scale reports how much left. These tests answer the more important question: what can the body that remains still do?

Deadly Company is the 1° Deadlier lifestyle company — apparel, the GEAR supplement system, this Journal, and Body English, the training app — and it publishes tests like these for the same reason it prints every dose on its own labels: a number you can repeat beats a feeling you can’t. The full framework these checks belong to is the GLP-1 muscle-preservation protocol, and What is Deadly Company? is where the company behind the Journal explains itself.

Sources: Rikli RE, Jones CJ. Senior Fitness Test Manual (2nd ed., 2013): standardised chair-stand and functional-test procedures, including the 30-second chair stand. Roberts HC et al. “A Review of the Measurement of Grip Strength in Clinical and Epidemiological Studies: Towards a Standardised Method.” Age and Ageing (2011): grip-protocol variables and the need for consistent equipment and posture. American College of Sports Medicine. ACSM’s Guidelines for Exercise Testing and Prescription (current edition consulted 2026-10-24): exercise-test safety and standardisation principles. 2025 joint advisory on nutritional priorities during GLP-1 therapy (ACLM/ASN/OMA/TOS): protein target 1.2–1.6 g/kg adjusted body weight/day and resistance-activity context. Translation Bank, verified 2026-10-21: daily target at 180 lb ≈ a chicken breast at every meal; 16g EAAs ≈ whole ~138g steak.

This article is education, not medical advice. It does not diagnose or treat any condition. Talk to your clinician about your medication and your protein target before changing your intake. These statements have not been evaluated by the FDA.